The AOMED SD09 Four Folding Spine board, made of high density polyethylene (HDPE) is durable and the package is small-sized. The flat backboard surface does not intensify the cervical spinal injuries or obstruct CPR efforts; the subtle texture surface also can prevent slippage, and it is easy to sterilize and clean. SD09 is featured with its 4 foldaway size; its package size is very small, very easy to store and carry.